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Rack-mount VoIP gateway with dual T1/E1 module and five empty bays

AudioCodes

AudioCodes M1KB-D2 VoIP gateway dual T1/E1 5 bays

SKU CH-8GT0-KDHVE MPN M1KB-D2

A VoIP gateway with a dual T1/E1 span module, five modular bays and redundant Gigabit Ethernet, supporting G.711, G.723.1, G.729 and G.722 voice coders plus G.168 echo cancellation

  • Product typeAccessories
  • Key featuresInterfaces: - Dual T1/E1 span module installed - 5 additiona
  • Dual T1/E1 spans for high-capacity trunk connectivity
  • Five modular bays allow flexible voice module expansion
  • Active/standby Gigabit Ethernet pair ensures network redundancy
  • Broad codec support from G.711 to AMR covers diverse call requirements
  • G.165 and G.168 echo cancellation with configurable tail lengths improves call clarity

Mediant 1000B dual T1/E1 gateway

The AudioCodes M1KB-D2 is a Mediant 1000B VoIP gateway with a dual T1/E1 span module installed and five additional modular bays for voice modules. It provides one active/standby pair of 10/100/1000 Ethernet interfaces for network connectivity. The unit supports a wide range of voice coders including G.711, G.723.1, G.729 and G.722. It is suited for enterprises migrating TDM trunks to SIP networks.

Suitable for TDM-to-SIP migration

This gateway fits organisations that need to connect legacy T1 or E1 circuits to an IP telephony system while retaining room for future voice module expansion. It handles echo cancellation per G.165 and G.168-2002 with selectable tail lengths. Buyers who require integrated analogue FXS ports or built-in survivable branch office features should evaluate other platforms.

Dual T1/E1 spans with five open bays

The defining specification is the factory-installed dual T1/E1 span module combined with five modular bays for additional voice interfaces. This configuration determines the maximum digital trunk density and the remaining capacity for analogue or digital expansion modules. Verify that your trunk provider delivers T1 or E1 signalling compatible with the supported CAS and ISDN protocols.

How it compares

Measured against everything we stock in IP Phones & VoIP Handsets, at today’s prices. Recalculated every night.

Price $4,112.99
Pricier than about 91% of the 495 comparable items (median $138.99).

Specifications

Product
Brand nameAudioCodes
Model nameM1 KB-D2
Product typeAccessories
Size & build
Shipping weight9.07 kg
Package size762 × 635 × 254 mm

Questions about this item

Will the dual T1/E1 span module require scheduled replacement after a certain period?

The dual T1/E1 span module is installed and the chassis provides five additional modular bays for voice modules, allowing capacity changes without replacing the base unit.

What limits sustained call capacity on the gateway?

The gateway supports independent dynamic vocoder selection per channel across codecs such as G.711, G.723.1, G.729 and G.722, with echo cancellation tail lengths of 32, 64 or 128 ms.

How much heat or noise does the unit produce when running all day?

The gateway uses a single active/standby pair of 10/100/1000 Ethernet interfaces and processes media through DSP resources without a published thermal or acoustic rating.

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